I am having a bunch of my friends tell me that when we go down to Fl. me and my family need to wear tennis shoes, not sandals. i HATE wearing tennis shoes in the heat. i dont plan on wearing flip flops, just some nice comfy sandals. but everyone keeps telling me im going to get bad blisters and just make myself miserable. i have these sandals that just have one big strap that goes over the front of my foot. no strap where my heel is, nothing in between my toes. i plan on bringing my tennis shoes just in case. though i think i will be more comfortable in my sandals.